问题
选择题
--- Are you sure you have to ? It's been very late.
--- I don't know _____ I can do it if not now.
A．where
B．why
C．when
D．how
答案
答案：C
搜题请搜索小程序“爱下问搜题”
--- Are you sure you have to ? It's been very late.
--- I don't know _____ I can do it if not now.
A．where
B．why
C．when
D．how
答案：C